Hi and welcome to HCM..
I thank you for posting your query here and I'm definitely going to help you out..
I am really sorry for your state but here I'm to tell confidently that you will not be pregnant, do not worry..
I being a surgeon, we encounter so many such cases day in and day out..
I read your question completely and have understood it well enough..
I will analyze all your points below..
1. You had unprotected sex 2 times and you used spermicides too..
Well, that itself tells you. There's no chance of
pregnancy with the use of spermicidal agents.. And even though you didn't use for 2nd time, it's effective.
2. Condom breakage is the most common problem encountered. But reading, your menstrual cycles I can say with certainty that you are safe.!
3. One day earlier completing periods again is the most important history.
Generally, ovulation occurs 14 days after completion of periods. Especially in your 26 to 28 day cycle.
So 100% there's no chance of ovulation and hence pregnancy even if he had ejaculated completely into your vagina!
4. No need for any kind of pill.
Just chill and be happy..
5. And convey my regards to your doctor too..
Hope this helps, in case you need any further assistance, please let me know...
Take care and be happy. God bless you.