Hi Dear, Firstly Congratulations for conceiving As told by you that you had irregular periods and difficulty in conception, it appears that you have some hormonal disturbance. Progesteron pills are form of supportive treatment given to such females to prevent pregnancy wastage. It takes care of low progesteron levels which is very important in early pregnancy. these drugs are sfe and cause no side effects to your fetus inside. Also, pregnancy test canbe easy carried out at home and is quiet reliable. As you already told that you yourself carried out the test so your doctor must not have felt the need to repeat it.Also, clinical examination tells a lot. Relax and continue with the treatment