Pregnant after 5.5 years of trying! But cramping??

I just took a test (a 5 days early test) yesterday that was really faint, but positive. Took a dollar store test this morning then that was negative. I’m hoping it’s just that I need to wait a couple days. I’ve been having cramping for the past 3 days and it’s making me nervous after 2 miscarriages early this year. I remember before the cramping only lasted less than a day before the bleeding started so I’m wondering, has anyone experienced cramping, specifically vaginal cramping and lower abdominal tenderness and tension in the first few weeks and been ok? My sister was 35 weeks pregnant and had such bad cramping she thought she was in labor but it turned out to be a severe UTI. I’ve had lots is UTIs in my life so since she said that I’m trying to deal with that. I’ve tried to schedule a dr appointment but they’re closed for the holiday.

The app says I’m 6 wks and 5 days but I think with an ultra sound it would be closer to 5 wks because of my wacky cycles.