Provera 10 mg while still in period

Vane

This is going to be a long post and confusing post so I apologize in advance but I'm soo confused.

I have been trying to get pregnant for a little over a year now. The very first month of trying I got pregnant but ended up miscarrying naturally at 12 weeks 6 days (baby stopped growing at 8 weeks). My husband had to go back to his country (New Zealand) because his dad is sick and he's going to be there for about 6 months and I'm visiting him next month. I started my period Friday the 17th so I'm on day 3 of my period. I'm going to be with my husband from June 6th until the 21st which means we are going to miss my ovulation period and I won't see him again for about 4-5 months. My ob referred me to a fertility clinic but they can't see me before my trip so I talked to my ob about it and he prescribed provera 10mg for 10 days to move my period to ensure I'm ovulating while I'm in NZ. He advised me to start taking it right away. I know he's the expert and not me but I feel a little nervous about it seeing I'm on day 3 of my period. So far he's never prescribed anything other than metformin due to my PCOS. It regulated my periods right away and I have been having my periods and ovulating every month for the past few years. I'm 36 years old so he says there's no time to waste and I agree. After my miscarriage in Jun 2018 my periods had been irregular up until 2 months ago. My miscarriage was June 1st and had regular periods in July, August, Sep, and Oct then I didn't have a period in Nov, December, and Jan. I got my period again in February but my March period was 15 days late ( 45 days after first day of last period). My April and May periods went back to 30 days apart which is how they had always been before my m/c. Before my miscarriage my periods were regular every month. I feel nervous to take the provera and mess up my cycles again but again, I don't want to miss the chance to try for a baby next month as hubby and I won't be able to baby dance until September/October. I voiced my concerns to my ob and he said since we've never had to skip, delay or do anything to my periods, it should be fine to do this this one time. It still makes me nervous though because I have done tons of research and have not found a situation similar to mine. So pretty much he prescribed me provera so I can get my period again soon and hopefully ovulate while I'm in NZ. Has anyone been through this or heard of this? Thank you!!