Implantation bleeding?

Hi #firsttimemom here! Took a pregnancy test kit twice and was tested positive. Should be 5 weeks now. But I have been experiencing spotting/ bleeding only when I pee and wipe. Blood doesn't stain on pad. Went to KKH to do blood test on 2 separate occasions and the hCG level is increasing, but very slowly. From 103 to 182 in two days. Spotting has been ongoing for 9 days now and I am very worried for bad news. My gynae appointment is only next week (as advised week 6). Help!?