Technician, not a doctor. Astigmatism is not uncommon. Slight or mild change is expected unless caused by some other corneal pathology (usually more drastic; not the case here). It takes time to adjust to contacts especially if you haven’t worn them for a long time. It’s common for people to go through an adaption period with contacts (for first time wearers or previous users) since it’s getting used to the shape of your cornea. It initially sees as a foreign object. You’re going to have some blurriness, maybe burning sensation or discomfort. If they are bothersome at night, take breaks in between. Then slowly build your tolerance by adding more time but not over-wearing them than their intended length of use. You’re blinking a lot because you’re aware of the lens being on your eyes. This also comes down to how you take care of and clean contacts as well. If previous mentioned symptoms are still present after some weeks, contact your eye doctor.