Missed periods. Any chance of pregnancy?

Issue - periods delayed Breif history - had periods on 30th november 2020 then had intercourse on 28 december 2020 then took ipill on that day within 3 hours .then had bleeding for 5 days from 3rd of january to 8th of january (5 days light bleeding) Then again had bleeding in february 1st to 6th of february (5 days light bleeding) Then since then no periods till now.. I had beta hcg test on 26th of january and the level was 0.100 mIU/ml again i had beta hcg test on 4th of march and the level was 0.100 mIU/ml then again had beta hcg test on 18th march  and the level is 0.345 mIU/ml also i have vaginal discharge which is creamy and is non sticky and also have itching in vagina..and somewhat swollen foot too.. Does it mean preganancy?? If no...then aid should be done Also since a week 1st april i m having mild back pain and mild lower abdominal pain for sometime..just for an hour and two and whenever i bend downwards i feel pain at the lower back.. Is there any chance of pregnancy??