Struggling with Anxiety Medication

Hi. I’m starting week 4 with escitalopram and I’m wondering if the meds are going to work. I do see some improvements like sometimes I feel myself but then there are times where I think…. Will I ever be able to go out in public with out freaking out. I have a vacation coming up in July and I’m going on a plane and I’m thinking will I even be able to do that… I don’t think I will be able to….. or I think will I be able to walk a long distances….. (had a bad experience just going for a walk around the park- walked and felt like I was going to die but no it was anxiety since then I have been scared just to go on a walk). I feel totally hopeless. What do I do??? I just don’t want to feel this way. It sucks so much 😔