Just wondering if it is normal to spot on Day 5 FSH injections?

My period finished a few days ago but it has started again. I am on 200 units of Puregon. Rang my clinic for reassurance, but they could not advise me if this mean't anything. I have had a BT done but am a little anxious waiting for results. Really fearing my cycle will be cancelled.

Can anyone advise?

Many thanks
WTH