I don't know how long you knew each other before you started to date, but, overall, two weeks of dating is a very short time. Definitely too short to say that you know someone well, not to mention that you love them. You saying that you love her may have unsettled her. You came a bit too strongly for this early stage of a relationship.
Those on the spectrum tend to get obsessed with people they love or think they love while mistaking this strong interest with love. Whatever the case with you, you saying these things right now may only alienate her from you. I would suggest just trying to get to know her better for now. Give her some time and be patient. If you're not sure about something, talk to her and stay open-minded while she answers. Don't get into the extreme where every breath you takes revolves around her - it's considered quite creepy. Or, at least, make sure she doesn't see you like this.
You may also ask her about boundaries she would like to put up for now and if something makes her uncomfortable. For you it may be 'out of the blue' but for her, well. She might have given you many non-verbal signs that you simply missed. Communication is the key here. Not enough is bad but pressing her too much is not good either so just keep moderation. I know it's vague but the thing is that there are no clear guides for these things. Just observe her body language and stop pushing when you see her being uncomfortable like low eyebrows, tucked chin, quicker breath, avoiding eye contact, playing with hands, sweating etc.
Also, 'love', like 'hate', is a very strong word. Especially mature love. Saying that you love someone while not knowing them too well makes it sound quite empty.
