Clomid

Okay so last July I Did one round on clomid day 3-7. I ovulated on day 14 like I was suppose too and was very blessed to get pregnant the first round. I ended up having a miscarriage at 3 months. Anyway I just started ttc again this is my second round of clomid. The first month I didn’t get a positive ovulation test at all. This month (2nd month) I got a positive way after day 10-16. Anyone else have the same problem? Did they just up your dosage?